Professional Amplifier for Teachers – Crystal Clear, All-Day Power
Tired of straining your voice in large classrooms or outdoor settings? Our Teacher’s Portable Voice Amplifier delivers louder volume without distortion, ensuring every student hears you clearly—without shouting.
Loud & Crystal Clear
3-inch speakers plus a booster circuit assure loud and clear sound, helping students listen clearly and save the teacher's throat.
Smart Anti-Squeal Tech
Working well with minimal feedback with advanced frequency shifting technology. Keep the distance between the voice amplifier and the microphone at more than 20 cm to supress the eEar-Piercing Feedback
Fine-tune volume with precise dial control
The dial control allows for more subtle and precise volume adjustment. When worn on the body, the dial is more convenient for volume adjustment than the button type.
Swivel- adjustable Microphone
You can adjust the angle of the microphone to position the microphone head as close to your mouth as possible to achieve the best amplification effect.
Minimalist and Functional Design
Applicable scenarios
Multi-color and What’s Included
Norwii Voice Amplifier
 S358 2000mAh |  S358 4000mAh |  S358 Pro Wireless 4000mAh |  S358 Wireless 5200mAh |  S358 Wireless 5200mAh |  S328 4000mAh |  S368 1800mAh | |
|---|---|---|---|---|---|---|---|
Customer Reviews | — | — | — | — | — | — | — |
Price | — | — | — | — | — | — | — |
Charge Time | 2-3 Hours | 4-6 Hours | 4-6 Hours | 3-4 Hours | 3-4 Hours | 4-6 Hours | 2-3 Hours |
Use Time | 12-15 Hours | 25-30 Hours | 15-20 Hours | 10-12 Hours | 10-12 Hours | 35-38 Hours | 22 Hours |
Microphone Style | Wired Microphone | Wired Microphone | Wired + Wireless Microphone | Wired + Wireless Microphone | Wired + Wireless Microphone | Wired Microphone | Wired Microphone |
Battery Capacity | 2000mAh | 4000mAh | 4000mAh | 5200mAh | 5200mAh | 4000mAh | 1800mAh |
Bluetooth | ? | ? | ? | ? | ? | ? | ? |
TF Card Port | ? | ? | ? | ? | ? | ? | ? |
Recording function | ? | ? | ? | ? | ? | ? | ? |
Voice Amplifier
Your Trusted Expert in Presentation & Audio Devices
S358 Voice Amplifier
Professional Bluetooth Amplifier for Teachers
Bluetooth Voice Amplifier
S358 Wireless
Wireless Voice Amplifier with Bluetooth Speaker
Mini Voice Amplifier
S328 Voice Amplifier
Multi-Function Personal Amplifier - HD Display
Are our products of high quality?
Our products use advanced chips and technology, combined with our experienced R&D team, professional customer guidance, and over 100 technical workers, to ensure that the quality of our products and services is top-notch.
Is the amplifier loud?
Norwii's portable amplifier not only has loud sound, but also good sound quality and clean sound. Our goal is to make the audience hear comfortably and clearly.
How to avoid feedback between microphone and voice amplifier?
1. Please maintain a distance of at least 50 centimeters between the microphone and the amplifier. Backing the amplifier to the microphone can achieve better amplification effect.
2. Please do not hold the microphone head with your hands.
How to Charge the voice amplifier?
The charging Port is USB-C. Please charge the voice amplifier through 5V mobile phone charger, computer, or power bank.
How to solve the problem of poor sound amplification effect?
For the best amplification effect, we suggest.
1. Do not remove the sponge cover of the microphone pickup head.
2. Keep the microphone pickup head facing your mouth and maintain a distance of 0.5-1cm.
Professional Amplifier for Teachers – Crystal Clear, All-Day Power
Tired of straining your voice in large classrooms or outdoor settings? Our Teacher’s Portable Voice Amplifier delivers louder volume without distortion, ensuring every student hears you clearly—without shouting.
Loud & Crystal Clear
3-inch speakers plus a booster circuit assure loud and clear sound, helping students listen clearly and save the teacher's throat.
Smart Anti-Squeal Tech
Working well with minimal feedback with advanced frequency shifting technology. Keep the distance between the voice amplifier and the microphone at more than 20 cm to supress the eEar-Piercing Feedback
Fine-tune volume with precise dial control
The dial control allows for more subtle and precise volume adjustment. When worn on the body, the dial is more convenient for volume adjustment than the button type.
Swivel- adjustable Microphone
You can adjust the angle of the microphone to position the microphone head as close to your mouth as possible to achieve the best amplification effect.
Minimalist and Functional Design
Applicable scenarios
Multi-color and What’s Included
Norwii Voice Amplifier
S358 2000mAh | S358 4000mAh | S358 Pro Wireless 4000mAh | S358 Wireless 5200mAh | S358 Wireless 5200mAh | S328 4000mAh | S368 1800mAh |
|---|---|---|---|---|---|---|
| Customer Reviews | ||||||
| — | — | — | — | — | — | — |
| Price | ||||||
| — | — | — | — | — | — | — |
| Charge Time | ||||||
| 2-3 Hours | 4-6 Hours | 4-6 Hours | 3-4 Hours | 3-4 Hours | 4-6 Hours | 2-3 Hours |
| Use Time | ||||||
| 12-15 Hours | 25-30 Hours | 15-20 Hours | 10-12 Hours | 10-12 Hours | 35-38 Hours | 22 Hours |
| Microphone Style | ||||||
| Wired Microphone | Wired Microphone | Wired + Wireless Microphone | Wired + Wireless Microphone | Wired + Wireless Microphone | Wired Microphone | Wired Microphone |
| Battery Capacity | ||||||
| 2000mAh | 4000mAh | 4000mAh | 5200mAh | 5200mAh | 4000mAh | 1800mAh |
| Bluetooth | ||||||
| ? | ? | ? | ? | ? | ? | ? |
| TF Card Port | ||||||
| ? | ? | ? | ? | ? | ? | ? |
| Recording function | ||||||
| ? | ? | ? | ? | ? | ? | ? |
Voice Amplifier
Your Trusted Expert in Presentation & Audio Devices
S358 Voice Amplifier
Professional Bluetooth Amplifier for Teachers
Bluetooth Voice Amplifier
S358 Wireless
Wireless Voice Amplifier with Bluetooth Speaker
Mini Voice Amplifier
S328 Voice Amplifier
Multi-Function Personal Amplifier - HD Display
Are our products of high quality?
Our products use advanced chips and technology, combined with our experienced R&D team, professional customer guidance, and over 100 technical workers, to ensure that the quality of our products and services is top-notch.
Is the amplifier loud?
Norwii's portable amplifier not only has loud sound, but also good sound quality and clean sound. Our goal is to make the audience hear comfortably and clearly.
How to avoid feedback between microphone and voice amplifier?
1. Please maintain a distance of at least 50 centimeters between the microphone and the amplifier. Backing the amplifier to the microphone can achieve better amplification effect.
2. Please do not hold the microphone head with your hands.
How to Charge the voice amplifier?
The charging Port is USB-C. Please charge the voice amplifier through 5V mobile phone charger, computer, or power bank.
How to solve the problem of poor sound amplification effect?
For the best amplification effect, we suggest.
1. Do not remove the sponge cover of the microphone pickup head.
2. Keep the microphone pickup head facing your mouth and maintain a distance of 0.5-1cm.
